A leaky faucet is a common plumbing issue where water drips or flows from the faucet even when it is turned off. This problem can occur due to worn-out washers, damaged O-rings, or corroded valve seats. Over time, these components can degrade, leading to water waste and increased utility bills. Fixing a leaky faucet typically involves disassembling the faucet, replacing the faulty parts, and reassembling it. Regular maintenance can help prevent leaks. If the problem persists, it may be necessary to consult a professional plumber for further assistance with the plumbing system.